Children as young as 9 are being tracked as the next potential jihadists, a Dutch intelligence official warned Monday.

Rob Bertholee, the head of intelligence for the Netherlands, said authorities identified 70 minors out of a group of around 250 Dutch citizens who left the country to wage jihad in the Middle East, NBC News reports.

When asked about his country’s decision to include children 9 and older on the terror list, Bertholee responded, “We cannot rule out any scenarios.”

The Netherlands’ General Intelligence and Security Service said in January that a third of Dutch children in Syria and Iraq had been born there, suggesting that those who fled the Netherlands struck up relationships with militants after arriving, Newsweek reports.